來(lái)源:網(wǎng)絡(luò)資源 2024-12-07 21:15:29
1. 用作主語(yǔ)
直接把動(dòng)詞不定式置于句首的情況不多,多數(shù)情況用it作形式主語(yǔ),把真正的主語(yǔ)—動(dòng)詞不定式置于句末,特別是不定式短語(yǔ)較長(zhǎng)時(shí)。動(dòng)詞不定式作主語(yǔ),謂語(yǔ)動(dòng)詞用第三人稱單數(shù)形式。帶疑問(wèn)詞的不定式短語(yǔ)作主語(yǔ)常置于句首。
It is our duty to try our best to deal with these problems.
盡最大努力處理這些問(wèn)題是我們的責(zé)任。
The head teacher said it was necessary to talk with his mother.
校長(zhǎng)說(shuō),和他媽媽談一談很有必要。
How to learn English well is important.
如何學(xué)好英語(yǔ)很重要。
To see is to believe.
眼見(jiàn)為實(shí);百聞不如一見(jiàn)。
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